JPH10331502A - Automobile door checker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive door checker which can precisely press shoes against a check plate although having a small number of part items and using no expensive rubber spring. SOLUTION: This automobile door checker is so designed that a pair of shoes 16, which are opposite to each other with a check plate 6 between them along their cross direction, and an elastic means which provides a resilient repulsive force so as to press the fronts of the shoes 16 against the check plate 6 are housed in a case 1. In this case, the elastic means comprises an elastic piece 17 coupled to the backs of the shoes 16 and resiliently abutting to the inner surface of the case 1 to press the shoes 16 against the check plate 6 by means of its repulsive force, the elastic piece 17 and the shoes 16 being integrated together into a molding of a synthetic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interposed between a vehicle body and a door to control a door opening / closing torque.
The present invention relates to an automobile door checker that holds a door at a predetermined opening position, and particularly relates to a case that is fixed to one of a vehicle body and a door, and that the case is movably penetrated to the other of the body and the door. A check plate to be connected is provided, and a pair of shoes facing each other with the check plate sandwiched in the thickness direction and elastic means for exerting elasticity to press the shoes against the check plate are housed in the case. Things to do: Improvements.

[0002]

2. Description of the Related Art Such a door checker is, for example, a real hokkaido 7
It is already known, as disclosed in JP-36041.

[0003]

The conventional door checker uses a rubber spring as an elastic means, and is interposed between the rear surface of the shoe and the inner surface of the case.

[0004] In such a door checker structure, the number of parts is large and the rubber spring is particularly expensive, so that there is a limit in reducing the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is an inexpensive door checker capable of accurately pressing a shoe against a check plate without using an expensive rubber spring. The purpose is to provide.

[0006]

In order to achieve the above object, the present invention provides a case fixed to one of a body and a door of an automobile, and a case movably penetrating the case and the other of the body and the door. And a pair of shoes facing each other with the check plate sandwiched in its thickness direction, and elastic means for exerting elasticity to press each of the shoes against the check plate in the case. In the housed door checker, the shoe is coupled to a rear surface of the shoe opposite to the check plate, and resiliently contacts an inner surface of the case to check the shoe by a repulsive force. The first feature is that the elastic means is constituted by an elastic piece which is brought into pressure contact with a plate, and the elastic piece and the shoe are formed as an integral synthetic resin molded body. That.

According to this feature, the shoe and the elastic piece constitute one component, and the elastic piece exerts the same function as the conventional rubber spring, thereby reducing the number of parts of the door checker. In addition, an expensive rubber spring can be eliminated.

According to the present invention, in addition to the features described above, the elastic piece is formed so that both ends thereof are connected to the rear surface of the shoe to define a cavity between the elastic member and the rear surface.
A second feature is that a contact projection is formed at the center of the outer surface of the elastic piece to contact the inner surface of the case.

According to this feature, the elastic piece is supported at both ends, and when bent toward the cavity, a large tensile stress is generated in the bent portion. It can be pressed accurately. In addition, since a projection is formed at the center of the outer surface of the elastic piece to contact the inner surface of the case, the elastic piece is flexibly bent from the center of the elastic piece by this projection, and ideal non-linear spring characteristics are obtained. Obtainable. In addition, the repulsive force of the elastic piece can be adjusted by appropriately selecting the root cross-sectional area of the projection.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments of the present invention shown in the accompanying drawings.

FIGS. 1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view of a main part of an automobile equipped with a door checker of the present invention, and FIG. 3 is a sectional view taken along line 4-4 of FIG. 2, and FIG. 5 is an exploded perspective view of a main part of the door checker.

First, referring to FIG.
A door D is rotatably mounted via a hinge H so as to open and close the entrance, in order to provide the door D with an appropriate opening / closing resistance and a plurality of open holding positions between the body B and the door D. Is attached.

As shown in FIGS. 1 to 3, the door checker C has a case 1 fixed to the inner surface of an end wall of a door D by bolts 2. The case 1 includes a box-shaped case main body 1a having one open end, and a cover 1b which is sandwiched between the case main body 1a and the inner surface of the end wall of the door D while covering the open end. The cover 1b and the case main body 1a are provided with through-holes 4,5 coaxial with the through-hole 3 opening in the end wall of the door D, and penetrate these three through-holes 3,4,5. The base end of the check plate 6 is rotatably connected to the bracket 7 via a pivot 8,
The bracket 7 has a pivot 8 arranged in parallel with the pivot axis of the hinge H, and is fixed to the body D by a bolt 9.

The check plate 6 is composed of a plate body 6a made of a steel plate directly connected to the bracket 7, and a synthetic resin covering body 6b molded to the peripheral surface except for both ends of the plate body 6a. Be composed. The cover 6b is formed so that the plate thickness of the check plate 6 gradually increases from the base end side (the bracket 7 side) to the free end side, and the thickness of each of the intermediate portion and the free end side end portion thereof. The first and second notches 10, 10; 11, 1
1 is provided, and a stopper 12 is provided on the plate body 6a adjacent to the second notches 11, 11 on its free end side.

The stopper 12 is a stopper plate 14 made of a steel plate and fixed to the plate body 6a with a pin 13.
And a stopper rubber 15 attached to the stopper plate 14 and facing the second notches 11, 11.
A large number of cushion projections 15a protrude from the end faces of the stopper rubber 15 facing the second notches 11,11.

As shown in FIGS. 2, 4 and 5, a pair of shoes 16, 16 sandwiching the check plate 6 in its thickness direction are stored in the case 1. Shoe 1
Each of the front surfaces of the check plates 6 and 16 is provided with a semi-cylindrical concave portion 16a extending in the width direction of the check plate 6, and can be rolled on the check plate 6 in the concave portion 16a. The roller 19 is mounted.

On the front surface of each of the shoes 16, 16, one guide protruding wall 16b, which is slidably in contact with both side surfaces in the width direction of the check plate 6, is formed.

On the other hand, elastic pieces 17 are connected to the rear sides of the shoes 16, 16, respectively. This elastic piece 17 is
The two ends 17a, 17 which are bent and connected to the rear surface of the shoe 16 so as to define a flat hollow portion 18 with the rear surface of the shoe 16.
a, and a contact projection 17b protruding toward the inner surface of the case 1 is formed at the center of the outer surface thereof. Each shoe 16 and the elastic piece 17 connected to it are molded into one molded body with a synthetic resin. As a material of the synthetic resin, polyacetal, nylon, or the like is suitable for securing the slidability and abrasion resistance of the shoe 16 and the durability of the elastic piece 17.

When the shoes 16 are accommodated in the case 1, the contact projections 17 b resiliently contact the inner surface of the case 1 while slightly bending the elastic pieces 17 toward the cavity 18. The shoes 16 are pressed against the check plate 6 via the rollers 19 by the repulsive force.

Next, the operation of this embodiment will be described.

In the closed state of the door D, the pair of shoes 16, 16 of the door checker C are provided with a relatively small repulsive force of the elastic pieces 17, 17 at the place where the thickness of the check plate 6 is relatively thin, and the cover 6b is formed. Rollers 19, 19 on both sides of
Is pressed through.

When the door D is opened from this state, the rollers 19, 19 of the shoes 16, 16 roll on both sides of the cover 6b in the direction of increasing the thickness in response to the opening of the door D. The shoes 16 move in the case 1 so as to deflect the elastic pieces 17, 17 toward the hollow portion 18, so that the repulsive force of the elastic pieces 17, 17 increases the shoe 1.
The pressing force on the check plates 6 and 16 is increased, whereby the opening torque of the door D is appropriately increased.

Then, when the door D is opened to a predetermined intermediate opening and the shoes 16, 16 come to a position facing the first notches 10, 10, the resilient pieces 17, 17 repel the shoes 16, 16, so that the doors D are opened. The rollers 19, 19 are engaged with the notches 10, 10, and the engagement force holds the door D at the intermediate opening position.

When the opening force on the door D is further increased, the shoes 16, 16 move again toward the stopper 12 while bending the elastic pieces 17, 17 again, and the case 1 is elastically received by the stopper rubber 15. Thus, the fully open position of the door D is defined. At this time, the shoes 16, 16 cause the resilient pieces 17, 17 to repel the rollers 19, 19
Since the door D is engaged with the positioning notches 11, 11, the fully open position of the door D can be held.

Each shoe 16 and elastic piece 17
Is made of a synthetic resin into a single molded body as described above, and the elastic piece 17 performs the same function as a conventional rubber spring. Therefore, the number of parts of the door checker C is reduced, and expensive rubber is used. A spring can be dispensed with and cost can be significantly reduced.

The elastic piece 17 is bent at both ends 1 so as to define a cavity 18 between the elastic piece 17 and the rear surface of the shoe 16.
7a and 17a are connected to the rear surface of the shoe 16 and are supported at both ends, so that when bent toward the hollow portion 18, a large tensile stress is generated in the bent portion, so that a large repulsive force is exerted. The shoe 16 can be accurately pressed against the check plate 6. In addition, a contact projection 17b is formed at the center of the outer surface of the elastic piece 17 so as to contact the inner surface of the case 1.
Can be easily bent from the central portion thereof, and as a result, the spring constant of the elastic piece 17 can be given a non-linear characteristic as shown in FIG.

According to this characteristic, when the shoe 16 moves in the direction of increasing the thickness of the check plate 6, the shoe 16
, The pressing force against the check plate 6 increases at an accelerated rate, so that a sense of moderation when the roller 19 of the shoe 16 is engaged with each of the notches 10 and 11 is clearly obtained, and the door D is securely held at a desired position. can do.

The repulsive force of the elastic piece 17 can be adjusted by appropriately selecting the root cross-sectional area of the contact projection 17b. That is, if the root cross section is set wide,
If the resilience of the elastic piece 17 is set to be large and narrow, the resilience can be reduced.

Further, by making the hollow portion 18 flat, it is possible to reduce the size of a single component composed of the shoe 16 and the elastic piece 17 and to further reduce the size of the case 1.

FIG. 7 shows a second embodiment of the present invention, in which a semi-cylindrical sliding projection 16c sliding on the check plate 6 is formed integrally with the shoe 16 instead of the roller 19. Otherwise, the configuration is the same as that of the previous embodiment. In the figure, portions corresponding to the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the gist of the present invention. For example, the case 1 is fixed to the body B side,
The bracket 7 of the check plate 6 can be attached to the door D side. Further, the elastic piece 17 may be configured in a cantilever type with one end being a free end.

[0032]

As described above, according to the first feature of the present invention, a case fixed to one of a body and a door of an automobile, and the case is movably penetrated to the other of the body and the door. A check plate to be connected is provided, and a pair of shoes facing each other with the check plate sandwiched in the thickness direction and elastic means for exerting elasticity to press the shoes against the check plate are housed in the case. In the vehicle door checker, the shoe is coupled to the rear surface of the shoe opposite to the check plate, and resiliently contacts the inner surface of the case to repel the shoe with the check plate. The elastic means is constituted by an elastic piece which is pressed into contact with the elastic piece, and the elastic piece and the shoe are formed as an integral synthetic resin molded body. In addition to being a part, the elastic piece will perform the same function as a conventional rubber spring, reducing the number of door checker parts and eliminating the need for expensive rubber springs. Cost reduction can be brought about.

According to a second feature of the present invention, the elastic piece is formed so that both ends thereof are connected to the rear surface of the shoe to define a cavity between the elastic member and the rear surface. ,
A contact projection is formed at the center of the outer surface of the elastic piece to contact the inner surface of the case, so that when the elastic piece bends toward the cavity, the shoe exerts a large repulsive force to accurately attach the shoe to the check plate. It can be pressed. Moreover, due to the presence of the protrusion at the center of the outer surface of the elastic piece, the elastic piece can be flexibly bent from the center of the elastic piece to obtain ideal non-linear spring characteristics, and the root cross-sectional area of the protrusion is appropriately selected. By doing so, it is possible to adjust the repulsive force of the elastic piece, and thereby obtain a good door check function.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an automobile equipped with a door checker according to a first embodiment of the present invention.

FIG. 2 is a partial longitudinal plan view of the door checker.

FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is an exploded perspective view of a main part of the door checker.

FIG. 6 is a diagram showing a spring characteristic of an elastic piece.

FIG. 7 is a sectional view similar to FIG. 2, showing a second embodiment of the present invention;

[Explanation of symbols]

 B: Body D: Door 1: Case 6: Check plate 16: Shoe 17: Elastic piece 17a: End 17b: Contact projection 18:・ Cavity

Claims (2)

[Claims] 1. A case (1) fixed to one of a body (B) and a door (D) of an automobile, and the body (B) and the door (D) movably penetrating the case (1). And a pair of shoes (16) opposed to each other with the check plate (6) sandwiched in the thickness direction thereof, and a pair of shoes (16) in the case (1). An automobile door checker, which accommodates elastic means for exerting resilience so as to press against the check plate (6), on the rear surface of the shoe (16) opposite to the check plate (6). The shoe (1) is resiliently brought into contact with the inner surface of the case (1) and repelled by the repulsive force.
The elastic means is constituted by an elastic piece (17) that presses the elastic piece (6) against the check plate (6).
A door checker for an automobile, wherein the shoe and the shoe (16) are formed as an integral synthetic resin molded body. 2. The elastic piece (17) according to claim 1, wherein both ends (17a) of the elastic piece (17) are connected to a back surface of the shoe (16), and a cavity ( 18) an automobile having an elastic piece (17) and an abutment projection (17b) formed in the center of the outer surface of the elastic piece (17) to abut the inner surface of the case (1). Door checker.